diff mbox series

[07/10] net/mlx5: get priority to send traffic to kernel

Message ID 20220920140422.98165-8-michaelsav@nvidia.com (mailing list archive)
State Superseded, archived
Delegated to: Raslan Darawsheh
Headers show
Series net/mlx5: implement send to kernel action | expand

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Michael Savisko Sept. 20, 2022, 2:04 p.m. UTC
Introduce mlx5_get_send_to_kernel_priority() function which returns
value of priority which must be used to jump back to table 0 in order
to send traffic to kernel. This function returns lowest priority.

Signed-off-by: Michael Savisko <michaelsav@nvidia.com>
---
 drivers/net/mlx5/mlx5_flow.c | 33 +++++++++++++++++++++++++++++++++
 drivers/net/mlx5/mlx5_flow.h |  1 +
 2 files changed, 34 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 8c93a3f2e5..c9e2b68957 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -10968,6 +10968,39 @@  mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority,
 	return  res;
 }
 
+/**
+ * Get the priority for sending traffic to kernel table.
+ *
+ * @param[in] dev
+ *   Pointer to the Ethernet device structure.
+ *
+ * @return
+ *   On success: the value of priority for sending traffic to kernel table
+ *   On failure: -1
+ */
+uint32_t
+mlx5_get_send_to_kernel_priority(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	uint32_t res;
+
+	switch (priv->sh->flow_max_priority) {
+	case RTE_DIM(priority_map_5):
+		res = 15;
+		break;
+	case RTE_DIM(priority_map_3):
+		res = 7;
+		break;
+	default:
+		DRV_LOG(ERR,
+			"port %u maximum priority: %d expected 8/16",
+			dev->data->port_id, priv->sh->flow_max_priority);
+		res = (uint32_t)-1;
+	}
+
+	return res;
+}
+
 /**
  * Get the E-Switch Manager vport id.
  *
diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h
index 860c6cd2ad..f4228a5549 100644
--- a/drivers/net/mlx5/mlx5_flow.h
+++ b/drivers/net/mlx5/mlx5_flow.h
@@ -1750,6 +1750,7 @@  uint32_t mlx5_get_lowest_priority(struct rte_eth_dev *dev,
 uint16_t mlx5_get_matcher_priority(struct rte_eth_dev *dev,
 				   const struct rte_flow_attr *attr,
 				   uint32_t subpriority, bool external);
+uint32_t mlx5_get_send_to_kernel_priority(struct rte_eth_dev *dev);
 int mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 				     enum mlx5_feature_name feature,
 				     uint32_t id,